Question

Help please!i'm not sure if i'm right. Honestly i'm not that confident about most of my work.

In which of the following thermochemical equations would the deltaH be considered a heat of solution?

C6H6 (s)--> C6H6 (l), deltaH = +9.87 kJ

2C8H18(l) + 25O2 (g)-->16CO2 (g) + 18H2O (l), deltaH = 5,471 kJ/mol

2NaHCO3 (s)---> Na2CO3 (s) + H2O (g) + CO2 (g), deltaH = 129 kJ

NH4NO3 (s)--> NH4+ (aq) + NO3 (aq), deltaH = +25.7 kJ/mol<--- my answer

is it correct?
Yes, you are correct.
The first one is heat fusion.
The second is heat of combustion.
The third is heat of decomposition.
The fourth is heat of solution.
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